关于微信小程序中顶部导航栏的实现

<view>    <view>11</view>    <view>22</view>    <view>33</view>   <view>44</view>   <view>55</view>     </view>    <swiper>    <!-- 我是哈哈 -->    <swiper-item>     <view>我是哈哈</view>    </swiper-item>    <!-- 我是呵呵 -->    <swiper-item>     <view>我是呵呵</view>    </swiper-item>    <!-- 我是嘿嘿 -->    <swiper-item>     <view>我是嘿嘿</view>    </swiper-item>    <swiper-item>     <view>我是嘿嘿</view>    </swiper-item>    <swiper-item>     <view>我是嘿嘿</view>    </swiper-item>  </swiper>

.swiper-tab{    width: 100%;    border-bottom: 2rpx solid #777777;    text-align: center;    line-height: 80rpx;   }  .swiper-tab-list{ font-size: 30rpx;    display: inline-block;    width: 20%;    color: #777777;  }  .on{ color: #da7c0c;    border-bottom: 5rpx solid #da7c0c;}  .swiper-box{ display: block; height: 100%; width: 100%; overflow: hidden; }  .swiper-box view{    text-align: center;  }

var app = getApp()  Page( {   data: {    /**     * 页面配置     */    winWidth: 0,    winHeight: 0,    // tab切换    currentTab: 0,   },   onLoad: function() {    var that = this;      /**    * 获取系统信息    */    wx.getSystemInfo( {       success: function( res ) {      that.setData( {       winWidth: res.windowWidth,       winHeight: res.windowHeight      });     }      });   },   /**    * 滑动切换tab    */   bindChange: function( e ) {      var that = this;    that.setData( { currentTab: e.detail.current });     },   /**   * 点击tab切换   */   swichNav: function( e ) {      var that = this;      if( this.data.currentTab === e.target.dataset.current ) {     return false;    } else {     that.setData( {      currentTab: e.target.dataset.current     })    }    },  /**  * 点击分享  */  onShareAppMessage: function () {   return {    title: '装逼小程序',    path: '/page/user?id=123'   }  } })